CUTTING DATA RECOMMENDATIONS. Uddeholm Corrax

Transcription

1 CUTTING ATA RECOMMENATIONS Machiig data are always depedet o the actual operatio, the machie tool ad the cuttig data used. The machiig data give is this datasheet are geeral guidelies that may have to be adjusted to the actual coditios o a speciic machiig operatio.

2 Turig Cuttig data ormulae π Cuttig speed, vc ( m /mi) vc Spidle speed, π ( rev / mi) Material removal rate, Q vc ap ( cm / mi) 2 50 Surace roughess, Ra ( μ m) r ε Leged a p Q R a r e Cuttig speed (m/mi) Spidle speed (rev/mi) Axial depth o cut (mm) Workpiece diameter (mm) Material removal rate (cm 3 /mi) Surace roughess (μm) Nose radius (mm) Millig π ( m/mi ) vc ( rev/mi) π v z z h m Q z ap ae v (mm/mi ) ae ae ( mm ) < (cm 3 /mi) 0,3 Leged v a p a e z z h m Q Cuttig speed (m/mi) Spidle speed (rev/mi) Feed speed (mm/mi) Axial depth o cut (mm) Radial depth o cut (mm) Number o teeth Feed per tooth (mm/tooth) Cutter diameter (mm) Average chip thickess (mm) Material removal rate (cm 3 /mi) rillig π Cuttig speed, vc ( m /mi) vc Spidle speed, π ( rev / mi) Feed speed, v ( mm / mi) Leged v Cuttig speed (m/mi) Spidle speed (rev/mi) Feed speed (mm/mi) rill diameter (mm) v Feed per rev, ( mm / rev)

3 Turig Turig Cemeted carbide HSS Roughig Fiishig Cuttig speed, (m/mi) Feed, (mm/rev) 0,2-0,4 0,05-0,2 0,05-0,3 epth o cut, a p (mm) 2-4 0,5-2 0,5-3 Suitable grades P20-P30 coated carbide P10 coated carbide or cermet 1. Cuttig luid is recommeded. 2. For turig with iterrupted cut or ace turig o large workpieces use a thougher cemeted carbide grade. Face millig Face millig Cemeted carbide Roughig Fiishig Cuttig speed, (m/mi) Feed, z (mm/tooth) 0,2-0,4 0,1-0,2 epth o cut, a p (mm) P20-P40 coated carbide P10-P20 coated carbide Suitable grades or cermet 1. Use a millig cutter with a positive-egative or positive-positive geometry. 2. Climb millig should geerally be used. 3. Millig should geerally be doe with coolat. Square shoulder millig Square shoulder millig with cemeted carbide a e 0.1 x a e 0.5 x a e 1 x Cuttig speed, (m/mi) Feed, z (mm/tooth) 0,25-0,3 0,15-0,2 0,1-0,15 Suitable grades P15-P40 coated carbide 1. Climb millig should geerally be used. 2. Choose the cutter diameter () ad the radial depth o cut (a e ) so that at least two cuttig edges are egaged simultaeously. 3. I the machie tool power is iadequate or the data give reduce the depth o cut, but do ot reduce the eed.

4 Ed millig Slot millig Axial depth o cut, a p 1 x Cutter diameter (mm) Ucoated HSS 1-4) Cuttig speed, (m/mi) Feed, z (mm/tooth) 0,01-0,03 0,03-0,04 0,04-0,05 0,05-0,06 0,06-0,09 Coated HSS 1-4) Cuttig speed, (m/mi) Feed, z (mm/tooth) 0,02-0,04 0,04-0,05 0,05-0,06 0,06-0,07 0,07-0,10 Solid cemeted Cuttig speed, (m/mi) carbide 5-8) Feed, z (mm/tooth) 0,006-0,01 0,01-0,02 0,02-0,04 Idexable isert 6-8) Cuttig speed, (m/mi) (cemeted carbide Feed, z (mm/tooth) 0,06-0,08 0,08-0,10 0,10-0,12 iserts) Suitable grades P20-P30 coated carbide Side millig For side millig the same cuttig speed as or slot millig ca Axial depth o cut, a p 1.5 x be used, but the eeds must be adjusted i order to obtai a suitable average chip thickess. Correctio actor or side millig ivide the cutter diameter with the radial depth o cut. See i the chart below which correctio actor, C, this correspods to, ad multiply the chose eed i the table or slot millig with this actor. 5 Example: Correctio actor, C Cutter diameter / Radial depth o cut, /ae 50 Tool: CC isert Cutter diameter: 40 mm Radial depth o cut: a e 2 mm /a e 40/2 20 Feed acc. to table slot millig 0.11 mm/tooth Correctio actor acc. to chart: C 2.8 Feed or side millig: z 2.8 x mm/tooth (slot ad side millig) 1. Climb millig is geerally recommeded. 2. Use a cutter with chipbreaker whe side millig with radial depths o cut, a e > 0.3 x. 3. Whe side millig with small radial depths o cut (a e ) the cuttig speed ca be icreased by up to 15%. 4. Use liberal amouts o cuttig luid. 5. It is recommeded to use a TiCN coated cutter whe millig with solid cemeted carbide tools. The axial depth o cut should ot exceed the cutter diameter whe slot millig. 6. Climb millig is geerally recommeded. 7. Whe side millig with small radial depths o cut (a e ) the cuttig speed ca be icreased by up to 30%. 8. The radial ru-out, at the cuttig edges, must be small ad ot exceed 0.03 mm.

5 rillig rillig rill diameter (mm) Ucoated HSS 1-2) Cuttig speed, (m/mi) Feed, (mm/rev) 0,05-0,10 0,10-0,20 0,20-0,30 0,30-0,35 0,35-0,40 Coated HSS 1-2) Cuttig speed, (m/mi) Feed, (mm/rev) 0,05-0,10 0,10-0,20 0,20-0,30 0,30-0,35 0,35-0,40 Idexable isert 3-4) Cuttig speed, (m/mi) (cem. carbide iserts) Feed, (mm/rev) 0,03-0,08 0,08-0,12 Solid cemeted Cuttig speed, (m/mi) carbide 5-7) Feed, (mm/rev) 0,08-0,10 0,10-0,20 0,20-0,30 0,30-0,35 Brazed cemeted Cuttig speed, (m/mi) carbide 5-7) Feed, (mm/rev) 0,15-0,25 0,25-0,35 0,35-0,40 1. The cuttig luid should be ample ad directed at the tool. 2. Whe drillig with short "NC drills" the eed may be icreased by up to 20%. For extra log drills the eed must be decreased. 3. Use isert grades i the rage o ISO P20-P30. Uder ustable coditios a tougher carbide grade should be used or the cetre positio. 4. Use a high cuttig luid pressure ad low rate or a good chip removal. 5. I machiig with solid or brazed cemeted carbide drills, a rigid set-up ad stable workig coditios are required. 6. The use o drills with iteral coolig chaels is recommeded. 7. Use a cuttig luid cocetratio o %. Tappig with HSS Cuttig speed, 7-9 m/mi 1. Threadig compoud or cuttig oil gives a loger tool lie tha emulsio.